<template>

    <el-table
        highlight-current-row
        :cell-style="{paddingTop: '4px', paddingBottom: '4px'}"
        strpe
        :height="height"
        :data="tableData"
        style="width: 100%;"
        @cell-mouse-enter="cellMouseEnter"
        @cell-mouse-leave="cellMouseLeave"
    >
        <el-table-column
            label="变量名"
            width="250">
            <template slot-scope="scope">
                <el-input clearable v-model="scope.row.key" placeholder="Key"></el-input>
            </template>
        </el-table-column>

        <el-table-column
            label="类型"
            width="120">
            <template slot-scope="scope">

                <el-select v-model="scope.row.type">
                    <el-option
                        v-for="item in dataTypeOptions"
                        :key="item.value"
                        :label="item.label"
                        :value="item.value">
                    </el-option>
                </el-select>

            </template>
        </el-table-column>

        <el-table-column
            label="变量值"
            width="400">
            <template slot-scope="scope">
                <el-input clearable v-model="scope.row.value" placeholder="Value"></el-input>
            </template>
        </el-table-column>

        <el-table-column
            label="内容"
            width="200">
            <template slot-scope="scope">
                <el-input clearable v-model="scope.row.desc" placeholder="变量简要描述"></el-input>
            </template>
        </el-table-column>

        <el-table-column>
            <template slot-scope="scope">
                <el-row v-show="scope.row === currentRow">
                    <el-button
                        icon="el-icon-circle-plus-outline"
                        size="mini"
                        type="info"
                        @click="handleEdit(scope.$index, scope.row)">
                    </el-button>

                    <el-button
                        icon="el-icon-delete"
                        size="mini"
                        type="danger"
                        v-show="scope.$index !== 0"
                        @click="handleDelete(scope.$index, scope.row)">
                    </el-button>
                </el-row>

            </template>
        </el-table-column>
    </el-table>

</template>

<script>
    export default {
        name: "Variables",

        props: {
            save: Boolean,
            variables: {
                require: false
            }
        },
        computed:{
            height() {
                return window.screen.height - 440
            }
        },

        watch: {
            save: function () {
                this.$emit('variables', this.parseVariables(), this.tableData);
            },

            variables: function () {
                if (this.variables.length !== 0) {
                    this.tableData = this.variables;
                }
            }
        },

        methods: {
            cellMouseEnter(row) {
                this.currentRow = row;
            },

            cellMouseLeave(row) {
                this.currentRow = '';
            },

            handleEdit(index, row) {
                this.tableData.push({
                    key: '',
                    value: '',
                    type: 1,
                    desc: ''
                });
            },

            handleDelete(index, row) {
                this.tableData.splice(index, 1);
            },

            // 类型转换
            parseType(type, value) {
                let tempValue;
                const msg = value + ' => ' + this.dataTypeOptions[type - 1].label + ' 转换异常, 该数据自动剔除';
                switch (type) {
                    case 1:
                        tempValue = value;
                        break;
                    case 2:
                        tempValue = parseInt(value);
                        break;
                    case 3:
                        tempValue = parseFloat(value);
                        break;
                    case 4:
                        if (value === 'True' || value === 'False') {
                            let bool = {
                                'True': true,
                                'False': false
                            };
                            tempValue = bool[value];
                        } else {
                            this.$notify.error({
                                title: '类型转换错误',
                                message: msg,
                                duration: 2000
                            });
                            return 'exception'
                        }
                        break;
                    case 5:
                        try {
                            tempValue = JSON.parse(value);
                        }
                        catch (err) {
                            tempValue = false
                        }
                        break;
                    case 6:
                        try {
                            tempValue = JSON.parse(value);
                        }
                        catch (err) {
                            tempValue = false
                        }
                        break;
                }

                if (tempValue !== 0 && !tempValue && type !== 4 && type !== 1) {
                    this.$notify.error({
                        title: '类型转换错误',
                        message: msg,

                        duration: 2000
                    });
                    return 'exception'
                }
                return tempValue;
            },

            //变量格式化variables
            parseVariables() {
                let variables = {
                    variables: [],
                    desc: {}
                };
                for (let content of this.tableData) {
                    if (content['key'] !== '') {
                        let obj = {};
                        const value = this.parseType(content['type'], content['value']);
                        if (value === 'exception') {
                            continue;
                        }
                        obj[content['key']] = value;
                        variables.variables.push(obj);
                        variables.desc[content['key']] = content['desc'];
                    }
                }
                return variables;
            },
        },
        data() {
            return {
                currentRow: '',
                tableData: [{
                    key: '',
                    value: '',
                    type: 1,
                    desc: ''
                }],

                dataTypeOptions: [{
                    label: 'String',
                    value: 1
                }, {
                    label: 'Integer',
                    value: 2
                }, {
                    label: 'Float',
                    value: 3
                }, {
                    label: 'Boolean',
                    value: 4
                }, {
                    label: 'List',
                    value: 5
                }, {
                    label: 'Dict',
                    value: 6
                }],

                dataType: 'data'
            }
        }
    }
</script>

<style scoped>

</style>
